Pneumatic tool

Tool driving or impacting – Drive controlled by relative movement of advance causing or...

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Details

173 30, 173 31, 173 32, 173 36, 173162R, B23Q 500

Patent

active

044023693

ABSTRACT:
A percussive-action pneumatic tool comprising a handle-carrying frame having successively accommodated therein a shock-absorber and a housing with the percussion mechanism therein, connected through a gas distribution system to a compressed air source. The frame has a length sufficient for abutting against the surface of a material being worked and has a guide which receives the housing with the percussion mechanism. The shock-absorber includes a receptacle mounted on the frame and communicating via a controllable valve alternatively with the compressed air source and the atmosphere, a rod being mounted in this receptacle, adapted to act upon the housing with the percussion mechanism, to move the housing relatively to the frame as compressed air is supplied into the receptacle.

REFERENCES:
patent: 1452140 (1923-04-01), Bayles
patent: 1917335 (1933-07-01), Smith et al.
patent: 3106134 (1963-10-01), Osborne
patent: 3866690 (1975-02-01), Lance et al.

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